Acetylene-torch.



C. JOHNSON. AGBTYLBNE TORCH. APPLIoA'rIoN FILED 11.211.113, 1911.

2 summe-s111151 1,

Patented Mar. 19,

j 1111, s 1 in.

s E s s m. n w

C. JOHNSON.

ACBTYLENB TORCH. APPLIUATION HLnD'APRJa, 1911.

1,020,559. Patented Mar.19,1912.

2 SHEETS-SHEET 2.

, .A www the torch with the cutting tip.

'UN-'ITE CARL JOHNSON, OF CHICAGO, ILLINOIS.

ACETYLENE-TORCH.

Specification of Letters Patent.

Application filed April 18. 1911.

Patented Mar. 19, 1912. serial No. 621,911.

To all whom 'it may concern:

Be it known that l, Cam. JonNsoN, a citizen oit the United States, residing at Chicago, in the county ot' Cook and State of Illinois, have invented certain new and useful Improvements in Acetylene-Torches,'

of which the following is a specification.

The principal object of my invention is to provide a new'and improved acetylene torch.

Another object of my invention is to provide an acetylene torch with interchangeable tips for welding or cutting purposes;

Another object ot' my invention is to provide an acetylene torch so designed that it can be readily and securely assembled or taken apart.

These objects and various others will be readily appreciated in connection with the following specication and claims, taken with the accompanying drawings.

In these drawings I have illustrated one particular embodiment of my invention, but the invention itself is defined in the appended claims.

Figure l is an elevation of the torch with the welding tip. Fig. 2 is a sectional view corresponding to Fig. l. Fig. il is a sew tional view on the line 3 3 otl Fig. 2. Figs. -l and are sections on the lines -l--4 and 5 5 of Fig. Q. Fig. G is a section ot' Fig. 7 is a section on the line 17 ot' Fig. lt`igs. 8 and i) are views taken approximately on the vline 8--9 of Fig. (i. looking respectively in the directions of the like numbered arrows, the cap being omitted from Fig. S.

I will first describe the torch with the welding tip, as illustrated in Figs. l to 5. rThe head 1:3 has an oxygen supply pipe lt with the flange 17 at its end clamped in place by the nut 1S. ',lhc acetylene supply pipe 19 screwed into a threaded boss and locked by the nut 20. The channels tand 22 are drilled and thenaliter the drill is removed the end ot' the channel is plugged, as indicated by The extreme end ot' the channel thus formed is prolonged in a very small hole Q4 which opens into a countersink or depression 29. An annular channel Qt is bored ont in the head l5 so as to leave a central boss Q7 surrounded by this channel 26. Diverging holes 30 are drilled in the boss Q7 so as 'to connect the eountersink 2f) with the annular channel QG. A hole 3l is drilled to connect the pipe 19 to the channel 2G. A shoulder or ledge 28 is formed in the head .'15 in the same plane with the end face ot' the boss 27. The welding tip 32 tits within the end of the head 15, its end face lying close against the. shoilder 28 and the end tace ot' the boss 27. The tip 32 h'alsca central duct 33, leading from the counter` sink 3l, that registers with the Countersink 29 in the boss 2T. The tip 32 has a` shoull der 3G, and the nut 35, acting against this shoulder, clamps the tip tightly in .place so that its inner end tits tight against the shoulder E23 and the boss 27.

lt will be secnjhnt the torch is solid and substantial, comparatively easy to manufacture, easy and simple to assemble or take apart, aml keep inl order in the hands of either `skilled or unskilled workmen.

The acetylene supply, coming along the pipe 19, roes thronfh the duct 31 into the annular channel 2o, and thence converges through the Yl'our ducts E() into the countersink 2S). 'lhe oxygen supply. coming along the pipe 16 and the duct 2l-22-v24, enters the same countersink Q9. The two registering counter-sinks Q9 and B-l constitute a mixing chamber for the oxygen and acetylene.

From. this mixing chamber the mixture goesA along the duct 33 in the tip 32 and -discharges at the end ot' this tip 32 where itis burned. ll'hen it is desired to transform the torch, so as to adapt it. for cutting metal, this may readily be done by unscrewing the nut 535i, removing the tip 32. and replacing it by the lip shown in Figs. t3, 7, t and Si'. These figures just referred to show the torch assembled with thc'mctal cutting tip, which will now be described.

It will be seen that the head l5 and the nut 35 are tho same as in Figs. l. to The nut 35,'acting on the shoulder 42, clamps the member l() against the shoulder 28 and the end `tace of the boss 2T. This member 4() has a central axial ductI 4l which registers with the counter-sink 29. A second member -lIS is screwed tightly to the tree end ol the first. member 40. This Second member -ll hasl a lateral ln'ojcction ll with a hole li drilled axially therein. An auxiliary oxygen pipe l5 connects by means ot' a nut `tti to the projection or boss, Lll. A duct -l-t, drilled in the end ot the member '13, connects willi the duct. 4T. The second mcmhev` lli has a countcrsink 4-5) in registry with the end ot' the duct l-l and in the tirst member 410. .Four small ducts 5() are drilled in the member 43 so as to lead from the countersink 49 to the opposite end of themember 43. The cap or tip 51 is screwed on the end of the `member 43 and the said member 43 and the said cap 51 have respective registering annular channels 52a and 52h which, when the parts are assembled, form an annular chamber 52. The ends ot the i'our ducts 50 open into this annular chamber 52.

Four mpre ducts 55 are drilled through the cap 51, so as rto lead 'from the annular chamber 52 to the front face of the cap 51. A duct 53 is drilled centrally inthe cap 51 in registry with the duct 4S in the member 43. This duct 53 is continued at its end, reduced in size as designated at 54, and the cap has a slight bead or projection 56 through which the duct 54 -opensJ centrally. The ducts 55 open close around this bead 56. v

lt will be scen that the oxygen, supplied through the pipe 16,' and the acetylene through the pipe 19, mingle in the mixing chamber 29. Thence the mixture goes axially through the ductv41 into the countersink 49, thence through the diverging ducts.

5() into the annular chamber 52, and thence through the converging ducts 55 to their outlet ends on the face of the cap 51. The auxiliary oxygen supply through the Apipe 45 goes through the duct 47%48-53-54 and discharges in the center of themixed oxygen and acetylene 'from the ducts 55. This produces a highly effective cutting flame.

1t will be seen that this torch, as shown in Figs. 6, 7, 8 and 9, is easy to put inplace oit the cutting tip shown in the earlier figures of the drawings. 4,The two members and 43 can be screwed tight together and then the l two of them can be turned, lso as to bringA the projection 44. in parallelism with the pipes 16 and 19; thereafter the nut 35 can be tightened.

1t should not be supposed that the ducts 55 necessarily register with the ducts 50 :tor this is not necessary. The cap 51 can be screwed on tightly and .if these ducts just referred to do not register the annular chamber 52 will connect them together. t will be observed thatin removing the cutting tip of Figs. 6, 7, 8 and 9, it is simply necessary to loosen the nut 35. The three members 40, 43 and 51 may be kept permanently assembled together as shown.-

' l claim *1. in a device of the class described, a head comprising a one-piece metal member having two ducts drilled therein, one of `said ducts extending axially, said member having ducts for oxygen and acetylene drilled therein and also having an annular channel cut in one tace oflthe metal member around the oxygen duct and connected to the acetylene duct, thus forming a boss in said face of the metal member, said boss being surrounded by said channel, said oxygen duct leading axially through said boss, and said boss having a countersinlr on its face at the end of said oxygen duct, said boss also. having converging ducts drilled therein from the annular channel tothe said coun tersink, in combination with a tip having a duct therein, said tip being adapted to be fastened securely against the face of the boss so as to cover and close said annular channel and have its duct connecting to the said countersink.

3. In a device of the class described, a head having a socket in its end to receive a tip and having! an Yannular channel cut at thebottom of said socket and located so as to leave a shoulder outside thelchann'el as well as a boss inside thereof, in combination with a tip adapted to lill said socket and lie closely against the end of the boss Gand against said shoulder, said tip having a duct therein. A

4. In a device of the class described, a head comprising a Onepiece metal member,

oxygen and acetylene supply pipes conj nected thereto, said metal 'member having ducts drilled therein leading from said pipes, the duct from the oxygen pipe being constricted near its end remote from the corcountersinlr and connected tothe acetylene duct and having converging ducts from said channel to said countersink, in combination with a tip having a duct therethrough con necting with said countersink.

5. In a device ot the class described, a head comprising a one-piece metal member, oxygen and acetylene supply pipes connected thereto, said metal member having ducts drilled therein connecting with the respective pipes, the duct from the oxygen pipe being constricted near its end remote from said metal member, said metal member also hav.- ing a countersink Where said duct opens on the face of the metal member and having a deep annular channel cutaround said countersinlr and connected to the acetylene duct,

in combination with a tip `fitting closely over said annular channgland thereby closing the same, said tip having an axial duct extend ing therethrough lfrom said countersink.

6." In aI device of the class described, a head'coinprising a one-piece metal ineniber having ducts drilled therein for oxygen and iis 'pipe and opening thence on the :Face ofthe central for art of its length with respect l@ to said f iverging ducts, and the third member of, said threepiece tip having a constricted central duc,` in continuation of the duct in the Second/member from the auxiliary oxygen supply and yhaving converging ducts connected to said last mentioned diverging ducts and surrounding said eonstricted'dischar e for the auxiliary oxygen.

7. n a device -of vthe class described, two members adapted 'to be screwed together,

' said members having opposed annular channels on their meeting faces located and adapted to form an annular chamber when assembled, said members having registering -axial ducts, a plurality of ducts around the axial ducts in each member connected, re-

erein, one of said members having its axial duct continued to one side, a boss on said member, said last named duct extending therethrough, and this same member having a .errar-threaded socket on the end away from said annular channel.

8. ln a device of the class described, a head having a cylindrical socket in its end, a tip havin a cylindrical end to fit therein, said head aving an annular channel cut therein at the bottom of said socket, the major diameter of the annularchannel being less than the internal diameter of the socket, whereby a shoulder is left at the bottom of the socket, and a boss surrounded by the said channel, said tip fitting tightly against said shoulder and boss and thereby completely closing the channel, said head and tip having cent1-al alining ducts, the duct in the head extending through the annular boss and said annular boss having branch ducts therein connecting the said central duct to the said annular channel, and supply connections to said central duet'l and to said annular channel.

ln testimony whereof, I have subscribed my' name. CARL JOHNSON- Witnesses I l' HENRY A. PARKS, FLORENCE A. F LoRELL. 

